• Includes USB 3.1 internal 19pin connector
  • PCI-E Gen2.0 x2, throughput up to 10Gbps
  • Compliant with eXtensible Host Controller Interface (XHCI) specification Revision 1.1
  • Compliant with USB Attached SCSI Protocol (UASP) Revision 1.0
  • Includes optional low profile slot cover for supporting low profile cases
Product Specifications
Model No.
Power requirement
5V via SATA 15-pin power connector
Form factor
Low profile - PCI-E 2.0 x2 (10Gbps)
USB Ports
Internal 19pin connector for dual USB 3.1 ports
USB 3.1 controller
ASMedia ASM1142
Transmitting Speed
USB 3.1 (10 Gbps), USB 3.0 (5 Gbps), USB 2.0 (480 Mbps), USB 1.1 (12 Mbps)
Operating system support
Windows 7 (32bit/64bit)*, 8/8.1/10 (32bit/64bit)**, Ubuntu/Linux/Mac OS***
Power Management
Support USB 3.1 and USB 2.0 link power management
UASP function
Current protection
Support over current detection and protection
* If your OS version is Windows 7 or earlier, please install driver (available from SilverStone website) prior to using the ECU04.
** Windows 8 or 8.1, 10 supports ECU04 automatically so you do not need to install additional driver for it.
*** User should check for XHCI function in Ubuntu/Linux or Mac OS, if computer system supports XHCI function then it can support ECU04 automatically without additional driver installation.

**** If your operating system is incompatible with the expansion cards developed by SilverStone, such that your device can not be detected or recognized, please update your motherboard’s driver or BIOS to the latest version. You may also try executing compatible mode in your operating system and select previous versions of operation system to install driver required by the expansion cards.
File Download
ECU04 Manual
File Size
1.05 MB
ECU04 driver_win7
File Size
3.17 MB
ECU04 High resolution photos
File Size
5.09 MB
ECU04 Product Sheet (ecu04-edm-en.pdf)
File Size
177.24 KB
Q & A
For internal 19-pin USB header cable, we highly recommend the user could choose the cable length with 300 ~ 500mm USB internal 19-pin header cable, and the cable should satisfied the SuperSpeed+ USB 3.1 requirement. On the other hand, the maximum cable length (internal plus external cables) should not be exceeded 1 meter.
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